Debug and Maintain Your Spring Boot Apps

So you have decided to build an application using Spring Boot? Sooner or later, something will go wrong. It does not matter how experienced we are. How will Spring Boot help us figure out what went wrong and fix things? This talk introduces lots of tools to help us debug and manage "bootiful" apps. You will learn how to use Boot's autoconfiguration report, override Boot's settings & beans, create custom metrics/health checks/app info, and create custom JMX info & custom CRaSH commands.

Code at https://github.com/gregturn/debug-your-spring-boot-app

Transcript

1. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Debug and Maintain Your Spring Boot App Greg Turnquist @gregturn gturnquist@pivotal.io github.com/gregturn
2. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ GregLTurnquist.com/list
3. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 3 Learn More. Stay Connected. § Learn how to debug Boot apps § Build support tools for Ops, your manager, and others § Have FUN! Twitter: twitter.com/springcentral YouTube: spring.io/video LinkedIn: spring.io/linkedin Google Plus: spring.io/gplus
4. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
5. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ “Bootiful” Applications § Auto-configured beans § Externalized, profile-specific properties § Make JAR not WAR § Pre-picked, harmonized libraries § ..and more! 5
6. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 6 “Working with Spring Boot is like pair- programming with the Spring developers. Josh Long @starbuxman
7. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
8. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Auto-configured beans are suddenly frightening! § What did Spring Boot do? § Why did it do it? § What can I do? 8
9. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
10. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ router101 multiplex205 switch1143 ActiveMQ
11. Demo Unless otherwise indicated, these slides are 
 © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
12. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Spring Boot Actuator (spring-boot-actuator) 12 Endpoint Provides /autoconfig Rules that matched, and rules that did not /health Health check for scripts and Ops team /configprops Property settings /info Custom application information
13. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
14. Demo Unless otherwise indicated, these slides are 
 © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
15. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Non-functional features § Auto-configuration report § Custom health checks § Application information § Custom metrics § Custom CRaSH commands to mix metrics AND health § …anything else? 15
16. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
17. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
18. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ springone2gx.com Spring Data REST: Data Meets Hypermedia + Security
19. Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Debug and Maintain Your Spring Boot App Greg Turnquist, test-bitten script junky, Pivotal @gregturn